983
FNCA52 TJSJ 201930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST MON APR 20 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-210800-
SOUTHEAST COASTAL PLAINS-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 50 20 30
TEMP (24H TREND) 69 (-3) 88 (+2) 68 87
RH % (24H TREND) 88 (+3) 49 (-4) 91 45
WIND 20FT/EARLY(MPH) E 13 E 13 NE 5 NE 9
WIND 20FT/LATE(MPH) NE 10 SE 14 NE 8 E 13
MIXING HGT(FT-AGL/MSL) 4880 5600
TRANSPORT WND (MPH) E 9 E 6
VENT RATE (KT-FT) 39040 28000
DISPERSION 5 5
DSI 4 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-210800-
SOUTHERN HILLS-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 20 70 20 40
TEMP (24H TREND) 66 (-3) 84 (+3) 65 83
RH % (24H TREND) 95 (+5) 58 (-8) 97 59
WIND 20FT/EARLY(MPH) E 12 E 10 NE 8 NE 9
WIND 20FT/LATE(MPH) NE 12 SE 11 NE 8 E 11
MIXING HGT(FT-AGL/MSL) 5590 6220
TRANSPORT WND (MPH) E 8 NE 5
VENT RATE (KT-FT) 39130 24880
DISPERSION 5 5
DSI 3 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-210800-
NORTH COASTAL PLAINS-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 20 30
TEMP (24H TREND) 69 (-2) 87 (+1) 69 86
RH % (24H TREND) 96 (+5) 56 (-7) 97 57
WIND 20FT/EARLY(MPH) E 14 E 10 E 11 E 10
WIND 20FT/LATE(MPH) SE 10 NE 13 E 10 NE 13
MIXING HGT(FT-AGL/MSL) 5060 4990
TRANSPORT WND (MPH) E 8 NE 8
VENT RATE (KT-FT) 35420 34930
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-210800-
NORTHERN HILLS-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 20 40 10 40
TEMP (24H TREND) 66 (-3) 85 (+1) 66 85
RH % (24H TREND) 96 (+3) 58 (-6) 99 60
WIND 20FT/EARLY(MPH) E 11 E 9 NE 10 E 9
WIND 20FT/LATE(MPH) SE 8 NE 11 E 10 NE 12
MIXING HGT(FT-AGL/MSL) 5850 5630
TRANSPORT WND (MPH) E 5 NE 7
VENT RATE (KT-FT) 23400 33780
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-210800-
WEST COAST-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 80 20 50
TEMP (24H TREND) 69 (-1) 87 (0) 69 87
RH % (24H TREND) 94 (+3) 58 (-5) 96 56
WIND 20FT/EARLY(MPH) E 12 E 8 NE 13 E 11
WIND 20FT/LATE(MPH) E 11 NW 8 E 12 N 13
MIXING HGT(FT-AGL/MSL) 4880 5430
TRANSPORT WND (MPH) SE 5 NE 5
VENT RATE (KT-FT) 19520 21720
DISPERSION 5 5
DSI 3 5 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-210800-
EASTERN INTERIOR-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 30 30 40
TEMP (24H TREND) 67 (-3) 85 (+2) 67 84
RH % (24H TREND) 97 (+5) 58 (-6) 97 59
WIND 20FT/EARLY(MPH) E 12 E 10 NE 8 NE 9
WIND 20FT/LATE(MPH) E 12 E 11 NE 8 NE 11
MIXING HGT(FT-AGL/MSL) 5790 6590
TRANSPORT WND (MPH) E 8 NE 7
VENT RATE (KT-FT) 40530 39540
DISPERSION 5 5
DSI 4 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-210800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 20 40 40
TEMP (24H TREND) 65 (-4) 80 (+2) 65 80
RH % (24H TREND) 99 (+4) 62 (-8) 99 64
WIND 20FT/EARLY(MPH) E 10 E 8 NE 6 NE 6
WIND 20FT/LATE(MPH) E 10 E 9 NE 5 NE 8
MIXING HGT(FT-AGL/MSL) 4780 5240
TRANSPORT WND (MPH) E 8 NE 7
VENT RATE (KT-FT) 33460 31440
DISPERSION 5 5
DSI 6 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-210800-
CENTRAL MOUNTAIN RANGE-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 20 70 20 60
TEMP (24H TREND) 63 (-3) 83 (+4) 63 83
RH % (24H TREND) 96 (+3) 60 (-8) 99 61
WIND 20FT/EARLY(MPH) E 6 E 5 NE 11 E 9
WIND 20FT/LATE(MPH) E 6 E 6 E 10 NE 12
MIXING HGT(FT-AGL/MSL) 6490 6770
TRANSPORT WND (MPH) E 3 NE 5
VENT RATE (KT-FT) 19470 27080
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-210800-
CAYEY MOUNTAIN RANGE-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 40 30 40
TEMP (24H TREND) 66 (-2) 81 (+3) 65 80
RH % (24H TREND) 99 (+4) 62 (-7) 100 64
WIND 20FT/EARLY(MPH) E 10 E 9 NE 6 NE 8
WIND 20FT/LATE(MPH) E 10 E 9 NE 5 E 10
MIXING HGT(FT-AGL/MSL) 5150 6090
TRANSPORT WND (MPH) E 8 NE 7
VENT RATE (KT-FT) 36050 36540
DISPERSION 5 5
DSI 4 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-210800-
VIEQUES-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 30 40
TEMP (24H TREND) 73 (-2) 85 (0) 72 85
RH % (24H TREND) 85 (+1) 56 (-4) 85 56
WIND 20FT/EARLY(MPH) E 16 E 12 NE 11 NE 9
WIND 20FT/LATE(MPH) E 16 E 8 NE 11 NE 10
MIXING HGT(FT-AGL/MSL) 3540 4200
TRANSPORT WND (MPH) E 14 NE 10
VENT RATE (KT-FT) 42480 37800
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-210800-
CULEBRA-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 20 30 40
TEMP (24H TREND) 74 (-2) 87 (+1) 74 85
RH % (24H TREND) 86 (+4) 54 (-7) 84 55
WIND 20FT/EARLY(MPH) E 16 E 12 NE 11 NE 8
WIND 20FT/LATE(MPH) E 16 E 9 NE 11 NE 9
MIXING HGT(FT-AGL/MSL) 3450 4210
TRANSPORT WND (MPH) E 15 E 9
VENT RATE (KT-FT) 44850 33680
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-210800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 20 60 30 40
TEMP (24H TREND) 69 (-3) 88 (+1) 68 88
RH % (24H TREND) 89 (+2) 48 (-6) 92 44
WIND 20FT/EARLY(MPH) E 16 E 12 NE 12 E 12
WIND 20FT/LATE(MPH) E 14 SE 12 NE 12 SE 11
MIXING HGT(FT-AGL/MSL) 5140 5830
TRANSPORT WND (MPH) E 9 E 3
VENT RATE (KT-FT) 41120 17490
DISPERSION 5 5
DSI 4 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-210800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 30 40
TEMP (24H TREND) 73 (-3) 85 (+1) 73 85
RH % (24H TREND) 86 (+5) 56 (-6) 88 55
WIND 20FT/EARLY(MPH) E 16 E 12 NE 12 NE 8
WIND 20FT/LATE(MPH) E 16 E 9 NE 11 NE 9
MIXING HGT(FT-AGL/MSL) 3540 4030
TRANSPORT WND (MPH) E 15 E 9
VENT RATE (KT-FT) 46020 32240
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-210800-
ST CROIX-
330 PM AST MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 20 30
TEMP (24H TREND) 72 (-4) 86 (+1) 72 86
RH % (24H TREND) 87 (+4) 58 (-4) 88 57
WIND 20FT/EARLY(MPH) E 16 E 11 NE 11 NE 9
WIND 20FT/LATE(MPH) E 14 E 10 NE 11 NE 10
MIXING HGT(FT-AGL/MSL) 4500 4340
TRANSPORT WND (MPH) E 9 NE 9
VENT RATE (KT-FT) 36000 34720
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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